61899514 has 16 divisors (see below), whose sum is σ = 96262920. Its totient is φ = 29816640.

The previous prime is 61899503. The next prime is 61899527. The reversal of 61899514 is 41599816.

61899514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11730625 + 50168889 = 3425^2 + 7083^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34684 + ... + 36424.

Almost surely, 2^61899514 is an apocalyptic number.

61899514 is a deficient number, since it is larger than the sum of its proper divisors (34363406).

61899514 is a wasteful number, since it uses less digits than its factorization.

61899514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385.

The product of its digits is 77760, while the sum is 43.

The square root of 61899514 is about 7867.6244190988. The cubic root of 61899514 is about 395.5752213158.

The spelling of 61899514 in words is "sixty-one million, eight hundred ninety-nine thousand, five hundred fourteen".